touch-packages team mailing list archive
-
touch-packages team
-
Mailing list archive
-
Message #102448
[Bug 1427995] Re: lscpu -p is showing wrong values for Node component
Verified this on a fully-enabled POWER8 system; confirming that without
the patch, multiple CPUs show incorrect node values (random garbage):
144,18,3,0,,18,18,18,18
145,18,3,0,,18,18,18,18
146,18,3,436483456,,18,18,18,18
147,18,3,256,,18,18,18,18
148,18,3,436482464,,18,18,18,18
149,18,3,256,,18,18,18,18
150,18,3,436482800,,18,18,18,18
151,18,3,256,,18,18,18,18
152,19,3,436482592,,19,19,19,19
153,19,3,256,,19,19,19,19
154,19,3,0,,19,19,19,19
155,19,3,0,,19,19,19,19
156,19,3,0,,19,19,19,19
157,19,3,0,,19,19,19,19
158,19,3,33,,19,19,19,19
159,19,3,0,,19,19,19,19
... And with the patch, things are the way they should:
144,18,3,17,,18,18,18,18
145,18,3,17,,18,18,18,18
146,18,3,17,,18,18,18,18
147,18,3,17,,18,18,18,18
148,18,3,17,,18,18,18,18
149,18,3,17,,18,18,18,18
150,18,3,17,,18,18,18,18
151,18,3,17,,18,18,18,18
152,19,3,17,,19,19,19,19
153,19,3,17,,19,19,19,19
154,19,3,17,,19,19,19,19
155,19,3,17,,19,19,19,19
156,19,3,17,,19,19,19,19
157,19,3,17,,19,19,19,19
158,19,3,17,,19,19,19,19
159,19,3,17,,19,19,19,19
** Tags added: verification-done
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to util-linux in Ubuntu.
https://bugs.launchpad.net/bugs/1427995
Title:
lscpu -p is showing wrong values for Node component
Status in util-linux package in Ubuntu:
Invalid
Status in util-linux source package in Trusty:
Fix Committed
Bug description:
[Impact]
Any user of lscpu on systems with multiple NUMA nodes.
[Test case]
On a POWER8 system:
1) Run 'lscpu'; take note of the values for "NUMA node# CPU(s)".
2) Run 'lscpu -p'.
The values on the fourth column in lscpu -p output should match the
node for which the CPU (first column) is listed (or contained in the
displayed range). For example:
$ lscpu
[...]
NUMA node0 CPU(s): 0-12,14-39
[...]
NUMA node3 CPU(s): 13,40-79
[...]
$ lscpu -p
[...]
12,1,0,0,,1,1,1,1
13,1,0,3,,1,1,1,1
[...]
39,4,0,0,,4,4,4,4
40,5,1,3,,5,5,5,5
[..]
The fourth column for CPU 12 and 39 is "0", which matches the "node0" range of 0-12,14-39.
The fourth column for CPU 13 and 40 is "3", which matches the "node3" range 13,40-79.
[Regression potential]
This change is limited to the output of a command that can be parsed; so any regression would be erroneous values for node "names" or numbers, which may throw off data retrieved by parsing the output of lscpu.
This particular bug constitutes the fix to a regression in a previous
SRU (ubuntu7.4), which included changes to support discontinuous NUMA
nodes, and introduced the code this SRU changes, so the regression
potential is minimal (this particular feature of lscpu is already
broken).
---
---Problem Description---
lscpu -p is showing wrong values for Node component
---uname output---
Linux ubuntu 3.16.0-25-generic #14-Ubuntu ppc64le ppc64le ppc64le GNU/Linux
Machine Type = P8
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Install a P8 machine with Ubuntu 14.04.02 ISO image in Power NV mode.
Then execute the below test scenario.
root@ubuntu-daily:~# lscpu -p
# The following is the parsable format, which can be fed to other
# programs. Each different item in every column has an unique ID
# starting from zero.
# CPU,Core,Socket,Node,,L1d,L1i,L2,L3
0,0,0,0,,0,0,0,0
1,0,0,1,,0,0,0,0
2,0,0,16,,0,0,0,0
3,0,0,17,,0,0,0,0
4,0,0,0,,0,0,0,0
5,0,0,0,,0,0,0,0
6,0,0,33,,0,0,0,0
7,0,0,0,,0,0,0,0
8,1,0,0,,1,1,1,1
9,1,0,0,,1,1,1,1
10,1,0,-1429431768,,1,1,1,1
11,1,0,16383,,1,1,1,1
12,1,0,1852125029,,1,1,1,1
13,1,0,777213279,,1,1,1,1
14,1,0,81,,1,1,1,1
15,1,0,0,,1,1,1,1
16,2,0,1920169263,,2,2,2,2
17,2,0,1634235183,,2,2,2,2
18,2,0,1815045490,,2,2,2,2
19,2,0,1818321775,,2,2,2,2
20,2,0,1852125029,,2,2,2,2
21,2,0,777213279,,2,2,2,2
22,2,0,759583829,,2,2,2,2
23,2,0,1953836600,,2,2,2,2
24,3,0,1278163046,,3,3,3,3
25,3,0,1162698563,,3,3,3,3
26,3,0,1195463507,,3,3,3,3
27,3,0,1966035781,,3,3,3,3
28,3,0,762079604,,3,3,3,3
29,3,0,1970170220,,3,3,3,3
30,3,0,1869426296,,3,3,3,3
31,3,0,0,,3,3,3,3
32,4,1,0,,4,4,4,4
33,4,1,0,,4,4,4,4
34,4,1,177,,4,4,4,4
35,4,1,0,,4,4,4,4
36,4,1,269092192,,4,4,4,4
37,4,1,256,,4,4,4,4
38,4,1,1,,4,4,4,4
39,4,1,16383,,4,4,4,4
40,5,1,0,,5,5,5,5
41,5,1,0,,5,5,5,5
42,5,1,269096544,,5,5,5,5
43,5,1,256,,5,5,5,5
44,5,1,269092512,,5,5,5,5
45,5,1,256,,5,5,5,5
46,5,1,269097536,,5,5,5,5
47,5,1,256,,5,5,5,5
48,6,1,269092688,,6,6,6,6
49,6,1,256,,6,6,6,6
50,6,1,269098208,,6,6,6,6
51,6,1,256,,6,6,6,6
52,6,1,269096960,,6,6,6,6
53,6,1,256,,6,6,6,6
54,6,1,269097456,,6,6,6,6
55,6,1,256,,6,6,6,6
56,7,1,269096544,,7,7,7,7
57,7,1,256,,7,7,7,7
58,7,1,269098592,,7,7,7,7
59,7,1,256,,7,7,7,7
60,7,1,269097344,,7,7,7,7
61,7,1,256,,7,7,7,7
62,7,1,269098016,,7,7,7,7
63,7,1,256,,7,7,7,7
64,8,2,269096880,,8,8,8,8
65,8,2,256,,8,8,8,8
66,8,2,269098400,,8,8,8,8
67,8,2,256,,8,8,8,8
68,8,2,269097184,,8,8,8,8
69,8,2,256,,8,8,8,8
70,8,2,269097856,,8,8,8,8
71,8,2,256,,8,8,8,8
72,9,2,269096672,,9,9,9,9
73,9,2,256,,9,9,9,9
74,9,2,0,,9,9,9,9
75,9,2,0,,9,9,9,9
76,9,2,0,,9,9,9,9
77,9,2,0,,9,9,9,9
78,9,2,65,,9,9,9,9
79,9,2,0,,9,9,9,9
80,10,2,1920169263,,10,10,10,10
81,10,2,1634235183,,10,10,10,10
82,10,2,1815045490,,10,10,10,10
83,10,2,1818321775,,10,10,10,10
84,10,2,1852125029,,10,10,10,10
85,10,2,777213279,,10,10,10,10
86,10,2,759583829,,10,10,10,10
87,10,2,1129066296,,10,10,10,10
88,11,2,1397050719,,11,11,11,11
89,11,2,1162297683,,11,11,11,11
90,11,2,1953836883,,11,11,11,11
91,11,2,1814916201,,11,11,11,11
92,11,2,2020961897,,11,11,11,11
93,11,2,7302446,,11,11,11,11
94,11,2,113,,11,11,11,11
95,11,2,0,,11,11,11,11
96,12,3,269092448,,12,12,12,12
97,12,3,256,,12,12,12,12
98,12,3,1,,12,12,12,12
99,12,3,16383,,12,12,12,12
100,12,3,0,,12,12,12,12
101,12,3,0,,12,12,12,12
102,12,3,269092272,,12,12,12,12
103,12,3,256,,12,12,12,12
104,13,3,269092688,,13,13,13,13
105,13,3,256,,13,13,13,13
106,13,3,269096960,,13,13,13,13
107,13,3,256,,13,13,13,13
108,13,3,269096544,,13,13,13,13
109,13,3,256,,13,13,13,13
110,13,3,269097344,,13,13,13,13
111,13,3,256,,13,13,13,13
112,14,3,269096880,,14,14,14,14
113,14,3,256,,14,14,14,14
114,14,3,269097184,,14,14,14,14
115,14,3,256,,14,14,14,14
116,14,3,269096672,,14,14,14,14
117,14,3,256,,14,14,14,14
118,14,3,0,,14,14,14,14
119,14,3,0,,14,14,14,14
120,15,3,0,,15,15,15,15
121,15,3,0,,15,15,15,15
122,15,3,65,,15,15,15,15
123,15,3,0,,15,15,15,15
124,15,3,1920169263,,15,15,15,15
125,15,3,1634235183,,15,15,15,15
126,15,3,1815045490,,15,15,15,15
127,15,3,1818321775,,15,15,15,15
root@ubuntu-daily:~# dpkg --list | grep util-linux
ii util-linux 2.20.1-5.1ubuntu20.4 ppc64el Miscellaneous system utilities
Contact Information = pavsubra@xxxxxxxxxx
Userspace tool common name: /usr/bin/lscpu
The userspace tool has the following bit modes: 64-bit
Userspace package: util-linux
Userspace tool obtained from project website: na
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1427995/+subscriptions
